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Measurement of D∗±, D± and D±s meson production cross sections in pp collisions at √s= 7 TeV with the ATLAS detector

Research output: Contribution to journalJournal article

  • ATLAS Collaboration
<mark>Journal publication date</mark>1/06/2016
<mark>Journal</mark>Nuclear Physics B
Number of pages47
Pages (from-to)717-763
Publication statusPublished
Original languageEnglish


The production of D∗±, D± and D±s charmed mesons has been measured with the ATLAS detector in pp collisions at √s= 7 TeV at the LHC, using data corresponding to an integrated luminosity of 280 nb−1. The charmed mesons have been reconstructed in the range of transverse momentum 3.5 <pT(D) <100 GeV and pseudorapidity |η(D)| <2.1. The differential cross sections as a function of transverse momentum and pseudorapidity were measured for D∗± and D± production. The next-to-leading-order QCD predictions are consistent with the data in the visible kinematic region within the large theoretical uncertainties. Using the visible D cross sections and an extrapolation to the full kinematic phase space, the strangeness-suppression factor in charm fragmentation, the fraction of charged non-strange D mesons produced in a vector state, and the total cross section of charm production at √s= 7 TeV were derived.